A study of beta-alumina crystal by ion beam techniques

Chengzhou Ji; W. Roth; R. Benenson

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A study of beta-alumina crystal by ion beam techniques

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- A study of beta-alumina crystal by ion beam techniques
- Nuclear Techniques Vol. 09, Issue 8, (1986)
- 作者机构：
  
  1.北京师范大学低能核物理研究所
  2.美国纽约州立大学奥尔伯尼分校
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：1986-08
- 稿件说明：
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Chengzhou Ji, W. Roth, R. Benenson. A study of beta-alumina crystal by ion beam techniques[J]. Nuclear techniques, 1986, 09(8): 10-16,61.
DOI：

Chengzhou Ji, W. Roth, R. Benenson. A study of beta-alumina crystal by ion beam techniques[J]. Nuclear techniques, 1986, 09(8): 10-16,61. DOI：

摘要

钠-硫高效蓄电池的问世

[1]

，促进了固体中离子导电现象和固体离子导体材料，特别是β-NaAl

的研究。β-NaNl

是使用性能良好的钠离子导体

，它的表面结构和成份直接影响钠-硫电池的电化学性能和使用寿命。由于β-NaNl

是非理想化学配比材料，外来原子的掺入很容易改变材料表面的结构和成份，明显改变钠离子导电率

[4]

。研究β-NaNl

常用的化学分析、X射线衍射、电阻率和密度测量等方法对表面变化不灵敏，在β-NaNl

中用高温扩散和离子交换法所能掺入的杂质种类有限，杂质量较难控制，因此要试用其它掺杂方法和各种表面分析手段。

Abstract

and Ag

ions have been implanted tentatively into beta-alumina single crystal. The projected ranges are 20% to 30% greater than those predictéd from LSS theory while the range stragglings are quite different upon the implanted ions. Channeling measurements suggest that the implanted Mn atoms diffuse both inwards and outwards due to annealing and eventually occupy the aluminium sites in the lattice meanwhile the damage region can be restored through recrystalization. The angular width measured along the C axis(0.95°) is in good agreement with the value (0.97°)calculated from a simplified model. The adsorbed water diffuses rapidly near the surface region of the crystal

but rather slowly in deep region. Water molecules which have been bound to the lattice atoms cannot be removed until the annealing temperature is raised up to 700℃.

关键词

Keywords

references

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